Yuuri Nonaka

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Across
  1. 2. Smaller pores of phylum porifera
  2. 4. Class of Phylum Annelida which are mostly marine and have distinct segmentation
  3. 7. Exoskeleton of sponges
  4. 9. Common bloodfluke found in southeast asia
  5. 10. Thick fleshy part where annelids transfer egg and sperm cells
  6. 12. Simplest canal system of Kingdom porifera
  7. 13. Sensory cells used to detect chemicals
  8. 15. Cnidarians respirate through this process
  9. 16. stinging cells present in cnidarians
  10. 18. organisms with many cells
  11. 20. Class of Phylum porifera which consists of 80% of all species
Down
  1. 1. Dorsoventrally flattened worm
  2. 3. complex sense organs around the head of nematodes
  3. 5. Free living mostly marine platyhelminthes
  4. 6. Other word for segmentation
  5. 8. Most common parasite in the USA
  6. 11. Cavity between gut and body wall
  7. 14. have a false body cavity
  8. 17. Greek word that means "thread"
  9. 19. Primitive chordates